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An Amine–Borane System Featuring Room‐Temperature Dehydrogenation and Regeneration
Author(s) -
Zhang Guojin,
Morrison Daniel,
Bao Guochen,
Yu Haibo,
Yoon Chang Won,
Song Taekyong,
Lee Jihye,
Ung Alison T.,
Huang Zhenguo
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202017302
Subject(s) - dehydrogenation , ethylenediamine , amine gas treating , hydrogen storage , borane , chemistry , boranes , boron , hydrogen , ammonia borane , nitrogen , carbon fibers , inorganic chemistry , polymer chemistry , organic chemistry , photochemistry , materials science , catalysis , composite number , composite material
Amine–borane complexes have been extensively studied as hydrogen storage materials. Herein, we report a new amine–borane system featuring a reversible dehydrogenation and regeneration at room temperature. In addition to high purity H 2 , the reaction between ethylenediamine bisborane (EDAB) and ethylenediamine (ED) leads to unique boron–carbon–nitrogen 5‐membered rings in the dehydrogenation product where one boron is tricoordinated by three nitrogen atoms. Owing to the unique cyclic structure, the dehydrogenation product can be efficiently converted back to EDAB by NaBH 4 and H 2 O at room temperature. This finding could lead to the discovery of new amine boranes with potential usage as hydrogen storage materials.